At: Review of Palaeobotany and Palynology, 97, 3-4 By: Schultka S., Hass H.
journalAt: Taxon, 35, 2 By: Fairon-Demaret M.
journalAt: Botanisches Echo, 1 By: Mez C. C.
journalAt: Freiberger Forschungshefte, Reihe, C, Geowissenschaften, Paläontologie, 400 By: Gebhardt U., Schneider J. W.
journalAt: American Museum Novitates, 298 By: Berry E. W.
journalAt: Acta Phytotaxonomica et Geobotanica, 59, 3 By: Yamada T., Kato M.
journalAt: Trudy Geologicheskogo Instituta Akademii Nauk SSSR, 346 By: Dobruskina I. A.
bookAt: Stratigr. Raschlen. Tunguss. Ser. Metod. Spor-Pyl'ts. Anal., Moscow, Izdateľstvo Akademii Nauk SSSR By: Medvedeva A. M.
bookAt: Stratigr. Raschlen. Otlozh. Verkhn. Dokembr., Kembr. & Ordovika Russk. Platf. Palinol., Leningrad, Leningradskij Gosudarstvennyj Universitete imeni A. A. Zhdanova By: Xing Y.-S.
journalAt: Doklady Akademii nauk Belorusskoi SSR, 1, 1 By: Kedo G. I.